DC isolator and inverter lethal voltages

If you open the dc isolator on the roof no lethal voltage goes to the inverter to the grid but safety devices are not used when the circuit is operating correctly. Consider a short circuit on the solar panel side of the DC isolator. Even when opening the DC isolator on the roof or at the inverter lethal voltages are being generated and potentially capable of electrocution. Basically, creating an open circuit at the inverter will do nothing. On a damaged array anyone can create an unpredictable alternative current path which may cause electrocution.

Electricians are putting their lives at risk, and many of them are not aware of the issues and problems associated with solar panels. As soon as the sun shines on the array, you’re at risk of electrocution. The trade and the public need to be warned of this problem.

The controller provided by Inverter.Co prevents high voltage at the output and also prevents arcing. What other solutions miss is the whole notion of a panel burning in the first place. EVA is formulated to withstand the temperatures of hot spots. It is counterintuitive, but the formulation also makes the EVA flammable above a certain temperature. Inverter.co panels cannot have hot spots, thus the EVA may be reformulated to char or melt when exposed to fire, but cannot catch on fire itself. Fire resistance is coded by UL classifications. Standard panels are a Class C roofing material. An Inverter.co panel with a reformulated EVA will be a Class A roofing material, the same as tile shingles.